Synthesis of 1,2-dihydroxyimino-1-phenyl-3,7-diaza-9,10-O-benzaloctane andits complexes with Co(II), Cu(II) and Ni(II)

A novel dioxime, 1,2 dihydroxyimino-3,7-diaza-9,10-O-benzaloctane (LH2) was prepared by reaction of 1,2-O-benzylidene-4-aza-7-aminoheptane and anti-ph enylchloroglyoxime in absolute ethanol. Mononuclear complexes with a metal- ligand ratio of 1:2 were prepared with Co(II), Cu(II) and Ni(II). To elucid ate the structures of the ligand and complexes, elemental analyses, IR, H-1 NMR and C-13 NMR spectral data and magnetic susceptibility measurements ha ve been examined.